JPH0799973B2 - Agricultural work machine for paddy field with fertilizer application - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a paddy field agricultural working machine in which a fertilizer applicator is attached to a paddy field agricultural working machine such as a rice transplanter or a submerged seeder.

2. Description of the Related Art Conventional paddy field agricultural working machines with fertilizer application have a structure in which the amount of fertilizer applied is manually adjusted according to the field.

Problems to be Solved by the Invention When the fertilizer is manually adjusted as in the prior art, it is difficult to adjust it frequently during the work, and when the paddy field is shallow, there is little slippage when the machine is running. Therefore, the fertilizer is applied in a sparse state, and when deep, the slip is increased and the fertilizer is applied in a dense state, so that there is a problem that uniform fertilization cannot be performed.

Means for Solving Problems This invention has taken the following technical means in order to solve the problems of the previous term.

That is, this invention is equipped with a fertilizer applicator 8 for applying fertilizer to a paddy field during work in a paddy field agricultural working machine such as a rice transplanter or a submerged seeder.
If the amount of fertilizer applied by the fertilizer applicator 8 is small when the depth of the paddy field is deep, and conversely when the depth of the paddy field is shallow, the fertilizer adjustment mechanism is controlled by the paddy field depth detection mechanism. An agricultural working machine for paddy fields with a fertilizer application characterized by being squeezed.

Effect and Effect of the Invention According to the present invention, the amount of fertilizer applied is large when the paddy field is shallow,
On the contrary, when it is deep, the amount of fertilizer applied is small and the fertilizer is automatically controlled, and the fertilizer is applied almost uniformly to the field.

Embodiment A power transmission device of a rice transplanter granular material feeding device with a fertilizer application, which is an embodiment of the present invention, will be described in detail with reference to the drawings.

1 is a passenger towing vehicle. Two are rice transplanters, which are attached to the rear part of the towing vehicle 1 via an elevating link mechanism 3. This rice transplanter 2 is provided with a seedling placing table 5 whose front side inclines upward in the upper part of the front part of the planting transmission case 4 which also serves as a machine frame so as to reciprocate left and right. A transplanting device 6 for dividing and transplanting the seedlings is provided, and leveling floats 7a and 7b are attached to the lower part. The rice transplanter 2 is a double-row rice transplanter that includes a plurality of the transplanting devices 6 at predetermined intervals in the left-right direction.

The fertilizer applicator 8 includes a fertilizer storage tank 10, a fertilizer feeding device 11 attached to the lower portion of the fertilizer storage tank 10 and a funnel 12 attached to the lower portion of the feeding device 11 via a stay 9 at the rear of the planted transmission case 4. The feeding unit A composed of is attached,
The grooving device 13 attached to the leveling floats 7a and 7b of the rice transplanter 2 and the funnel 12 are connected by the transfer hose 14 so that the fertilizer fed out is sprinkled in the paddy field. The fertilizer applicators 8 are installed laterally in the same number as the number of the transplanters 6.

The fertilizer feeding device 11 will be described in detail. A tubular screw cylinder in which a feeding case 15 having an opening communicating with the fertilizer storage tank 10 and the funnel 12 also serves as a bearing and is provided with a screw on the outer circumference on the base side. The shaft 16 is integrally provided, and the drive shaft 17 is inserted into the cylinder of the screw cylinder shaft 16 so as to be erected, and the drive shaft 17 is provided with the granular material feeding roll B for feeding and feeding the fertilizer. There is. The feeding roll B is a grooved roll.
18 and a fork roll 19, and the grooved roll 18
Is provided so as to be able to be transmitted through a clutch body 20 that is wedged to the drive shaft 17 with a key and is movable in the axial direction, and one walk roll 19 has a fork portion in a feeding groove 18a of the grooved roll 18. 19a is fitted so as to be movable in the axial direction, and if the boss of the gear 21 in which the boss portion is screwed onto the screw cylinder shaft 16 is engaged with the fork roll 19 so as to be rotatable and connected in the axial direction, It is tight. One grooved roll 18 side is rotatably provided around a bush 22 that is press-fitted on the tip end side of the cylinder shaft 16, and is configured to be transmission-rotated by the clutch body 20. 23 is a spring for exploding the clutch, and 24 is a collar.

The rotation transmission mechanism of the drive shaft 17 includes the left and right feeding devices 1
The drive shaft 17 located between 1 and 11 has a one-way rotating clutch 2
A cover cylinder 27 in which 5 and 26 are inserted and fixed is inserted, and one end side of the cover cylinder 27 is supported by one of the feeding cases 15 via a bush 28, and is attached to the outer ring 25a of the one-way rotation clutch 25. A stationary actuating arm 29 is connected to a crank 30 which is located on the outer side surface of the planted transmission case 4 and is rotated, via a connecting rod 31, and an arm 32 fixed to the outer ring 26a of the other rotary clutch 26.
Is fixed to the feeding case 15 with bolts 33, and
27 is fixed to the drive shaft 17 with a set bolt 34.

Reference numeral 35 denotes a pinion gear, which is fixed to a shaft 36 rotatably installed on the feeding case 15 and extending in the left-right lateral direction, and the pinion gear 35 is always meshed with the gear 21.
The amount of fertilizer to be fed is changed by rotating the shaft 36 in the forward and reverse directions.

37 indicates a motor capable of rotating in the forward and reverse directions, and the shaft 36 is the motor
It is configured to be driven by 37.

Reference numeral 38 is a paddy depth detector, and in the illustrated example, a link connecting member 40 mounted on the piston 39 side of the lifting link mechanism 3 is inserted into a detection control box 42 mounted on the cylinder body 41 side to detect a depth detecting rod. 43 is connected so that the distance from the cultivator of the paddy field to the surface of the paddy field can be captured as an electric signal according to the movement of the piston 39. That is, in the riding type rice transplanter, the rice transplanter 2 side is connected to the hydraulic cylinder main body 44 and the piston 39 according to the change of the ground contact pressure of the leveling float 7a.
Since the hydraulic system including the above is used for elevation control, and the ground contact pressure of the ground leveling float 7a is always kept within a certain range, the depth of the paddy field can be measured by the size of the piston 39 entering and exiting.

The detection device 38 thus configured and the motor 37 are interlocked with each other, and when the paddy depth becomes deeper than a certain reference range, the motor 37 rotates forward, and the rotation speed corresponds to the depth. Therefore, the control rotation is performed in the direction in which the fertilizer application amount decreases, and conversely, when the depth is shallow, the motor 37 is reversely rotated and the fertilization amount is increased so that the shallower the fertilization amount is.

In addition, a state in which the piston 39 projects greatly from a certain position,
That is, when the rice transplanter 2 is largely lifted during turning or traveling on the road, the rotation of the motor 37 is stopped so that the control cannot be performed.

Explaining the operation of the above example, when granular fertilizer is stored in the fertilizer storage tank 10 of the fertilizer applicator 8 and the rice planting work is started, the crank 30 protruding to the side surface of the planting transmission case 4 is activated along with the operation of the transplanting device 6. It is rotated, and the one-way rotation clutch 25 is operated via the connecting rod 31. That is, when the connecting rod 31 moves upward, the cover cylinder 27 is rotated from the outer ring 25a side, and the drive shaft 17 is transmission-rotated from the cover cylinder 27 via the set bolt 33.
Further, when the connecting rod 31 is moved downward, the power is not transmitted to the cover cylinder 27. Further, at this time, the cover cylinder 27 serves as a spiral, but since the outer ring 26a of the other rotating clutch 26 is attached to the feeding case 15, this reverse rotation is surely prevented and the drive shaft 17 is accurate. Be transmitted to.

In this way, the drive shaft 17 is rotated from the rotation transmission system of the transplanting device 6, and the grooved rolls 18 of the respective feeding devices 11, 11 ... Are transmission-rotated, and the fork rolls 19 fitted into the grooves 18a. Is also rotated. Therefore, the fork roll 19
Fertilizer is pumped into the groove 18a of the grooved roll 18 that is not filled with and is discharged into the funnel 12 at the bottom, and the transfer hole 14
Is discharged into the grooving device 13 and fertilizer is applied at the same time as planting.

In this way, the transplanting work and the fertilizing work are simultaneously performed, but the rice transplanter 2 is automatically controlled to move up and down according to the depth of the paddy field. More specifically, the ground contact pressure of the leveling float 7a that is gliding on the basis of the soil surface changes according to the depth of the paddy field and becomes deeper, and the tow vehicle body 1 descends on the basis of the paddy field surface. The ground pressure increases and is pushed upward to switch the hydraulic switching valve 45, the piston 39 projects, and the rice transplanter 2 is moved upward. On the contrary, when the depth becomes shallower, the ground pressure is reduced, the float 7a is lowered, the hydraulic pressure switching valve 45 is switched in the opposite manner, and the piston 39 is retracted to move the rice transplanter 2 downward.

In this way, the rice transplanter 2 is transplanted and fertilized while the vertical movement of the rice transplanter 2 is controlled according to the depth variation of the paddy field.

On the other hand, by the operation of the piston 39 that moves in and out according to the depth variation, the detection device 38 detects the paddy depth, the motor 37 is operated by the detection signal, and the shaft 36 is rotated by this motor 37.
The gear 21 is driven via the pinion gear 35, and is moved to the left or the right on the threaded tubular shaft 16 according to the rotation direction of the gear 21 to move the fork roll 19 that is linked to the gear 21 in the same left and right direction, The fertilizer feed rate is adjusted.

That is, when the depth of the paddy field is deeper than a certain range, the amount of feeding is controlled so as to decrease, and conversely, when the depth of the paddy is shallow, the amount of feeding is controlled so as to increase. Even if the traveling speed slows down, a large amount of fertilizer is not applied, and the fertilizer is applied in a uniform state as a whole.

The above invention has a configuration in which the fertilizer application amount is automatically changed and adjusted according to the depth of the paddy field, but when the fertilizer application amount is automatically changed and adjusted, the adjustment control is performed according to the seedling division amount by the transplanting device. There is a means of controlling or adjusting according to the seedling transplant strain. That is, the motor 37 is a detector that emits a signal according to the operating position of the seedling division amount adjusting lever 46 for adjusting the seedling division amount.
If the seedling division amount is increased by controlling with 47, the feeding amount is reduced. Conversely, if the seedling division amount is reduced, the feeding amount is increased so that the seedling overgrowth occurs. It can prevent and improve the yield.

In addition, when the planting machine 2 is adjusted by changing the transmission of the rice transplanter 2 with respect to the propulsion speed of the towing vehicle 1, the fertilizer application amount may be adjusted at the same time. By controlling the rotation of the motor 37 with the detector 49 that emits a signal according to the operation position of 48, increase the feeding amount when spreading the plants between plants to increase the sparse planting, and conversely when narrowing the plants between plants and densely planting. It is also possible to perform control so as to reduce the feeding amount and to prevent overgrowth in the same manner as described above.

It should be noted that the control of such another example may be independent control, but a combination control of these is also possible.

[Brief description of drawings]

FIG. 1 shows a rice transplanter with a riding type fertilizer applicator according to an embodiment of the present invention, FIG. 1 is a side view of the whole, and FIG. 2 is a plan view of essential parts.
FIG. 3 is a back cross-sectional view of the main part, FIG. 4 is a side view of the main part, and FIG.
FIG. 6 and FIG. 6 show a rear view of the main part of another example. In the figure, reference numeral 1 is a towing vehicle, 2 is a rice transplanter, 3 is a lifting mechanism, 8 is fertilizer application, 37 is a motor for adjusting the feeding amount, and 38 is a paddy field depth detector.

Claims (1)

[Claims] 1. When a paddy field agricultural working machine such as a rice transplanter or a submerged seeder is equipped with a fertilizer applicator 8 for fertilizing a paddy field during work, and when the fertilizer application amount of the fertilizer applicator 8 is deep in the paddy field. The paddy field agricultural working machine with a fertilizer application is characterized in that the fertilizer adjustment mechanism is controlled to be controlled by the paddy field depth detection mechanism so that it is applied in a small amount, and conversely in a large amount when it is shallow.